Senior Full Stack Engineer

Why This Role Matters

Our client is building a next-gen decentralized identity platform that blends biometrics, zero-knowledge cryptography, and blockchain to tackle one of the biggest issues of our time: proving you’re human in an increasingly AI-driven world.

With over 7 million users already onboarded, they’re creating privacy-first infrastructure for a future where digital trust is native, and users control their identity across Web3, social, and physical access layers — all while preserving anonymity.

This isn’t your typical full-stack gig. You’ll help architect the backend of a Sybil-resistant identity layer for the internet.

What You’ll Do

• Design and scale distributed systems for 10M+ users, implementing zero-trust security and low-latency credential verification.

• Build APIs and backend services that handle biometric data with zero-knowledge proofs — privacy-preserving by design.

• Tackle challenges across the stack, from PostgreSQL optimization and event-driven architecture to seamless front-end delivery (React, React Native).

• Collaborate on smart contract design for on-chain identity (Arbitrum / EVM-compatible chains).

• Prototype rapidly, gather feedback, and iterate with a privacy-by-design philosophy.

 

Who You Are

• 5+ years of experience in full-stack or backend engineering — with a preference for TypeScript/Node.js and deep understanding of system design.

• Passionate about privacy and security, especially when handling sensitive or biometric data.

• Comfortable in high-ownership roles at early-stage startups — you turn big visions into stable architecture.

• • Zero-knowledge proofs, applied cryptography, or blockchain dev.

  • DevOps experience (AWS, Kubernetes, HashiCorp stack).

    Bonus if you bring experience with:

     

     

The Stack

• Backend: TypeScript, Node.js, Express

• Infra: AWS, Docker, Nomad/Consul

• Data: PostgreSQL, Kafka/Redis

• Frontend: React, React Native, Swift/Kotlin

• Web3: Smart contracts, Arbitrum, ZK libraries

How the Team Works

• Remote-first and async-friendly

• Outcome-driven, not hour-tracked

• AI is used intentionally to accelerate workflows

• • First-principles thinking

  • Radical ownership

  • Designing for privacy and scale

    Values include:

     

Ready to build the trust layer of the internet?

Apply now and help solve one of the most urgent problems of the digital age.